4.4 Article

The ciliary lumen accommodates passive diffusion and vesicle-assisted trafficking in cytoplasm-ciliary transport

期刊

MOLECULAR BIOLOGY OF THE CELL
卷 34, 期 6, 页码 -

出版社

AMER SOC CELL BIOLOGY
DOI: 10.1091/mbc.E22-10-0452

关键词

-

向作者/读者索取更多资源

Transport of membrane and cytosolic proteins into the primary cilium is essential for its role in cellular signaling. Using virtual three-dimensional superresolution light microscopy, researchers have discovered new pathways, passive diffusion and vesicle-assisted transport, for the transportation of proteins from the cytoplasm to the primary cilium.
Transport of membrane and cytosolic proteins into the primary cilium is essential for its role in cellular signaling. Using virtual three-dimensional superresolution light micros-copy, the movements of membrane and soluble proteins from the cytoplasm to the primary cilium were mapped. In addition to the well-characterized intraflagellar transport (IFT) route, we found two new pathways within the lumen of the primary cilium: passive diffusion and vesicle-assisted transport routes that are adopted by proteins for cytoplasm-cilium transport in live cells. Through these pathways, approximately half of IFT motors (KIF3A) and cargo (alpha-tubulin) take the passive diffusion route, and more than half of membrane-embedded G protein-coupled receptors (SSTR3 and HTR6) use RAB8A-regulated vesicles to transport into and inside primary cilia. Ciliary lumen transport is the preferred route for membrane proteins in the early stages of ciliogenesis, and inhibition of SSTR3 vesicle transport completely blocks ciliogenesis. Furthermore, clathrin-mediated, signal-dependent internalization of SSTR3 also occurs through the ciliary lumen. These transport routes were also observed in Chlamydomo-nas reinhardtii flagella, suggesting their conserved roles in trafficking of ciliary proteins.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据